WIDAR Correlator Sensitivity Losses
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چکیده
This short memo presents the results of simulation tests that empirically quantify quantizer sensitivity losses in the WIDAR correlator for the EVLA. These results demonstrate that 3-bit/8-level quantization suffers a ~3.7% sensitivity loss and that 4-bit/15-level quantization suffers ~1.3% sensitivity loss. The results will also show that a WIDAR correlator with 3-bit initial quantization and 4-bit requantization with 5-level fringe rotation suffers a net sensitivity loss of about 7.8%.
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